Nadia Mannarino has an extensive background in both marketing and sales promotions. With a Bachelor of Science degree from New York University, Ms. Mannarino was a co-owner of Comics and Stories, dealers of rare Comic Collectibles; co-owner of All Star Auctions, a firm specializing in auctioning Comic Character related items and was the Comic Collectibles consultant for Christies East, the world renowned auction house, from 1992-1997.

In addition, Ms. Mannarino is a member of the prestigious American Appraisers Association for the past seven years, fully certified in accepted appraisal practices as required by the Association. Agent for some of the most prestigious artists to have ever worked in the medium, including Frank Frazetta, Mort Drucker, Carmine Infantino, Joe Simon, Angelo Torres and Jim Steranko. Perennial special advisor and contributor to The Overstreet Comic Book Price Guide, the universally acknowledged reference work in the field. Charter and founding member of the American Association of Comic Book Collectors Committee for Authenticity Certification and Grading. Ms. Mannarino has appeared as an industry expert on many programs running on channels such as CNN, MSNBC and the Discovery Channel.